Re: [RFC] Alternative raceless page free
Daniel Phillips (phillips@arcor.de)
Thu, 5 Sep 2002 18:31:45 +0200
On Thursday 05 September 2002 18:04, Christian Ehrhardt wrote:
> On Thu, Sep 05, 2002 at 05:21:31PM +0200, Daniel Phillips wrote:
> > ...this particular piece of code can no doubt be considerably
> > simplified, while improving robustness and efficiency at the same time.
> > But that goes beyond the scope of this patch.
>
> Well yes ;-) There's funny things going on like accessing a page
> after page_cache_release...
You're right about that one too, it should be put_page_nofree, since
freeing the page there is a bug for two reasons: !!page->mapping tells
us there should be a count on the page, and we continue to operate on
the page immediately below. Thanks again.
--
Daniel
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